3946074 factory or over the counter? - Corvette Forum

Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Log In 
Register FAQ Search Today's Posts Mark Forums Read Vendor Directory
Search

C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette

3946074 factory or over the counter?

Reply
 
 
 
Thread Tools Search this Thread
Old 11-09-2009, 11:41 PM   #1
Secret Squirrel
CF Senior Member
Support Corvetteforum!
 
Secret Squirrel's Avatar
 
Member Since: Jul 2000
Posts: 1,336
Location: Melbourne Australia
Thanks: 0
Thanked 0 Times in 0 Posts
Default 3946074 factory or over the counter?

Is there any real way to tell factory fitted heads compared to over the counter items?
I have a pair which have some stampings(some numbers and a big HC on each end)on the end and appear to have had 2 studs cut down on each head (screwed into intake ports from the block mating surface)

Dates are 7\3\69 and 2\28\69

cheers
Jim
Secret Squirrel is offline   Reply With Quote
Old 11-10-2009, 10:26 AM   #2
63mako
CF Senior Member
St. Jude Donor '08-'09
 
63mako's Avatar
 
Member Since: May 2005
Posts: 10,019
Location: Millington Illinois
Thanks: 0
Thanked 8 Times in 8 Posts
Default

Quote:
Originally Posted by Secret Squirrel View Post
Is there any real way to tell factory fitted heads compared to over the counter items?
I have a pair which have some stampings(some numbers and a big HC on each end)on the end and appear to have had 2 studs cut down on each head (screwed into intake ports from the block mating surface)

Dates are 7\3\69 and 2\28\69

cheers
Jim
Those were 69 ZL1 or L88 heads. Also used on 1971 LS6. Going by the dates they very well could be factory fitted. They sold a lot of these over the counter to the drag racers. If you wanted to build a hot big block back then these were the head to have. The open chamber design unshrouds the valves better than the closed chamber design. No way to tell if they are over the counter or factory as far as I know.
63mako is offline   Reply With Quote
Old 11-10-2009, 10:53 AM   #3
67tripwr
CF Senior Member
 
67tripwr's Avatar
 
Member Since: Mar 2004
Posts: 17,638
Location: Bringing The Liberal Hypocrisy To Light, Tolerance Has Become Intolerable
Thanks: 0
Thanked 4 Times in 2 Posts
Default

There is no way to tell from casting numbers or dates, as these were sold over the counter all the time.
67tripwr is offline   Reply With Quote
Old 11-10-2009, 11:39 AM   #4
7T1vette
CF Senior Member
 
7T1vette's Avatar
 
Member Since: Jan 2006
Posts: 25,600
Location: Crossville TN
Thanked 153 Times in 141 Posts
Default

I don't think anyone wanting a set of those heads would care if they came from the factory or from the dealer. If they are in good condition, they should be worth some money.
7T1vette is offline   Reply With Quote
Old 11-10-2009, 01:36 PM   #5
Secret Squirrel
CF Senior Member
Support Corvetteforum!
 
Secret Squirrel's Avatar
 
Member Since: Jul 2000
Posts: 1,336
Location: Melbourne Australia
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thank you for your help guys
Secret Squirrel is offline   Reply With Quote
Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Reload this Page 3946074 factory or over the counter?
 
 
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
63 SWC Interior colors JAMES69 C1 & C2 Corvettes 2 05-16-2011 07:55 PM
3866963 intake coil mount ? Secret Squirrel C1 & C2 Corvettes 2 09-27-2009 05:19 PM
SB 3973370 heads????? vettesbydesign C3 Tech/Performance 0 04-30-2008 11:09 PM
427 Aluminum heads tommyn C3 General 5 09-08-2007 06:25 PM
67 BB Hood Stand wombvette C1 & C2 Corvettes 5 02-15-2003 09:28 AM


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump



All times are GMT -4. The time now is 11:44 AM.